Lin Xiaoman, a sophomore girl in high school, was a "transparent person" in the back row of the classroom, until one day when she was sitting at an old desk in an abandoned old teaching building, she discovered that small blue letters appeared in her diary, "Spoiler". The way to solve minor troubles - avoiding random inspections by teachers and borrowing club painting supplies, had strange side effects of craving for out-of-print popsicles and constantly spinning pens with her fingers.
She teamed up with Jiang Che, a transfer student who can "understand the sounds of old objects", to trace the source of super powers and the secrets of Su Xiao's schoolmate 20 years ago. In the process of relying on and breaking away from super powers, she went from inferiority and cowardice to independence: she joined the comics club on her own, spoke out for the preservation of the old teaching building, and finally bid farewell to her super powers tenderly before the college entrance examination. She understood that growth never depends on "spoilers", but the courage to face every ordinary but determined moment.